With the first ring sorting tower, your child learns to recognize and differentiate colors and sizes in a playful way while developing fine motor skills. The 4 pastel-colored rings and the finishing ball are made of smoothly polished wood, and the core can be tilted for safety reasons. Product dimensions: 6.5 x 6.5 x 12.5 cm. PlanToys produces sustainable and natural wooden products made from recycled rubber trees.